Nightmare afternoon as that question was exactly the one posed by my insurance company! They do not have the model listed and as a result refused to quote me for it. Aargh! Over an hour on line trying different companies and drawing a blank everywhere.
Finally had BIBA* recommended to me by one M/C Insurance company as "they're the ones we use whenever we have a problem locating models" Called them and what a surprise, not on their model drop down list either. They, however, then took all the relevant details and custom built a quote for me. Phew. Not the cheapest by any means, but at least I'm covered. Decided to take it out on the monthly deal in the hope I can cancel if ever my own company finally get the DTX320 listed on their database.
* British Insurance Brokers' Association, not the defunct fashion house!